School constitution that is concretion and complementary of laws is the basic source of principal's power.
学校章程构成校长权力的基本来源，其对校长权力的规定，是对学校校长法定权力的具体化和补充。
School constitution that is concretion and complementary of laws is the basic source of principal's power.
学校章程构成校长权力的基本来源，其对校长权力的规定，是对学校校长法定权力的具体化和补充。
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